Contents
The provinces of the Basque Country as well as all cities and municipalities of more than 20,000 inhabitants.
Provinces
| | Name | Abbr. | Status | Adm. | Capital | A (km²) | C 1981-03-01 j | C 1991-03-01 j | C 2001-11-01 j | C 2011-11-01 j |
| i | Álava {Alava} | | Prov | PAI | Vitoria-Gasteiz | 3,038 | 257,850 | 272,447 | 286,387 | 320,783 |
| i | Guipúzcoa {Guipuzcoa} | | Prov | PAI | Donostia-San Sebastián | 1,980 | 694,681 | 676,488 | 673,563 | 708,428 |
| i | Vizcaya [Biscay] | | Prov | PAI | Bilbao | 2,217 | 1,189,278 | 1,155,106 | 1,122,637 | 1,156,194 |
| i | País Vasco (Euskal Herriko) [Basque Country] {Pais Vasco} | PAI | Reg | | Vitoria-Gasteiz | 7,235 | 2,141,809 | 2,104,041 | 2,082,587 | 2,185,405 |
| | Spain | ESP | | | Madrid | 504,783 | 37,682,355 | 38,872,268 | 40,847,371 | 46,815,916 |
- Instituto Nacional de Estadística, Madrid (web).
Principal Cities
| | Name | C C 2011-11-01 j |
| 1 | Bilbao | 351,356 |
| 2 | Vitoria-Gasteiz | 240,753 |
| 3 | Donostia-San Sebastián | 185,512 |
| 4 | Barakaldo | 100,064 |
| 5 | Getxo | 80,252 |
| 6 | Irun | 60,747 |
| 7 | Portugalete | 47,698 |
| 8 | Santurtzi | 47,101 |
| 9 | Basauri | 41,777 |
| 10 | Rentería | 39,228 |
Cities & Municipalities
| | Name | C C 1981-03-01 j | C C 1991-03-01 j | C C 2001-11-01 j | C C 2011-11-01 j |
| i | Arrasate o Mondragón {Arrasate o Mondragon} | 26,279 | 25,532 | 23,118 | 21,975 |
| i | Barakaldo (San Vicente de Baracaldo) | 114,462 | 105,088 | 94,478 | 100,064 |
| i | Basauri | 52,554 | 50,224 | 45,085 | 41,777 |
| i | Bilbao | 416,999 | 369,839 | 349,972 | 351,356 |
| i | Donostia-San Sebastián {Donostia-San Sebastian} | 169,233 | 171,439 | 178,377 | 185,512 |
| i | Durango | 21,357 | 22,627 | 25,003 | 28,367 |
| i | Eibar | 36,919 | 32,362 | 28,219 | 27,382 |
| i | Erandio | 1,934 | 25,055 | 22,422 | 24,369 |
| i | Galdakao | 26,785 | 28,569 | 29,544 | 29,153 |
| i | Getxo (Guecho) | 67,793 | 79,954 | 82,285 | 80,252 |
| i | Irun (Irún) | 53,334 | 53,276 | 56,601 | 60,747 |
| i | Leioa | 22,382 | 24,815 | 28,381 | 30,483 |
| i | Portugalete | 58,071 | 55,823 | 51,066 | 47,698 |
| i | Rentería {Renteria} | 46,496 | 41,646 | 38,224 | 39,228 |
| i | Santurtzi (Santurce-Antiguo) | 53,919 | 50,466 | 47,173 | 47,101 |
| i | Sestao | 40,374 | 35,948 | 31,773 | 28,805 |
| i | Vitoria-Gasteiz | 189,533 | 206,116 | 216,852 | 240,753 |
| i | Zarautz | 15,351 | 18,007 | 21,078 | 22,513 |
- (1981) M. Mas & F.J. Goerlich: La localización de la población española sobre el territorio.
(1991) (2001) (2011) Instituto Nacional de Estadística, Madrid (web).